Re^3: How to get Incremental charecter groups in a string

[Jasper]

Yes, well, yes, indeed, that does do what you say it does, but who knows what the OP wanted except the OP?

All I was showing was TMTOWTDI. Maybe. :)

[GrandFather]

I did like your trick of turning the regex inside out to check for incrementing runs of letters, but 'bcf' from OP's example argues against that being what is required. Nice trick though. :)